<template lang="html">
  <transition  name="move">
    <div class="food" v-show="showFlag" ref="foodWrapper">
      <div class="food-content">
        <div class="image-header">
          <img :src="food.image" alt="">
          <span class="icon-arrow_lift" @click="hide"></span>
        </div>
        <div class="content">
          <h1 class="title">{{food.name}}</h1>
          <div class="detail">
            <span class="sell-count">月售{{food.sellCount}}份</span>
            <span class="rating">好评率{{food.rating}}%</span>
          </div>
          <div class="price">
            <span class="now">￥{{food.price}}</span>
            <span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
          </div>
          <div class="cartcontrol-wrapper">
            <cartcontrol :food="food"></cartcontrol>
          </div>
          <transition name="hide">
            <div class="buy" v-show="!food.count || food.count === 0" @click.stop.prevent="addFirst(food,$event)">
              加入购物车
            </div>
          </transition>
        </div>
        <split v-show="food.info"></split>
        <div class="info" v-show="food.info">
          <h1 class="title">商品信息</h1>
          <p class="text" > {{food.info}}</p>
        </div>
        <split></split>
        <div class="rating">
          <h1 class="title">商品评价</h1>
          <ratingselect :desc="desc" :select-type="selectType" :only-content="onlyContent" :ratings="food.ratings"></ratingselect>
        </div>
      </div>
    </div>
  </transition>

</template>

<script>
import BScroll from 'better-scroll'
import cartcontrol from '../cartcontrol/cartcontrol'
import Vue from 'Vue'
import split from '../split/split'
import ratingselect from '../ratingselect/ratingselect'

const POSITIVE = 0;
const NEGATIVE = 1;
const ALL = 2;

export default {
  props:{
    food:{
      type:Object
    }
  },
  data(){
    return {
      showFlag: false,
      selectType: ALL,
      onlyContent: true,
      desc:{
        all: '全部',
        positive:'推荐',
        negative:'吐槽'
      }
    }
  },
  methods:{
    show(){
      //父组件可调用子组件方法
      this.showFlag = true;
      this.selectType = ALL;
      this.onlyContent = true;
      this.$nextTick(() => {
        if (!this.scroll) {
          this.scroll = new BScroll(this.$refs.foodWrapper,{
            click:true
          })
        }else {
          this.scroll.refresh();
        }
      });
    },
    hide(){
      this.showFlag = false;
    },
    addFirst(food,event){
      if (!event._constructed) {
        return;
      }
      Vue.set(food,'count',1);
    }
  },
  components:{
    cartcontrol,
    split,
    ratingselect
  }
}
</script>

<style lang="less">
.food{
  position: fixed;
  top: 0;
  left: 0;
  bottom: 48px;
  z-index: 30;
  width: 100%;
  background: #fff;
  transform: translate3d(0,0,0);
  transition: all 0.2s linear;
  overflow: hidden;
  &.move-enter,&.move-leave-active{
    transform: translate3d(-100%,0,0);
  }
  // &.move-leave,&.move-enter-active{
  //   transform: translate3d(0,0,0);
  // }
  .image-header{
    position: relative;
    width: 100%;
    height: 100vw;
    // padding-top: 100%;
    img{
      // position: absolute;
      // top: 0;
      // left: 0;
      width: 100%;
      height: 100%;
    }
    .icon-arrow_lift{
      position: absolute;
      top: 10px;
      left: 10px;
      color: #fff;
      padding: 10px;
    }
  }
  .content{
    padding: 18px;
    position: relative;
    .title{
      line-height: 14px;
      margin-bottom: 8px;
      font-size: 14px;
      font-weight: 700;
      color: rgb(7,17,27);
    }
    .detail{
      margin-bottom: 18px;
      line-height: 10px;
      font-size: 0;
      .sell-count,.rating{
        font-size: 10px;
        color: rgb(147,153,159);
      }
      .sell-count{
        margin-right: 12px;
      }
    }
    .price{
      font-weight: 700;
      line-height: 24px;
      .now{
        margin-right: 8px;
        font-size: 14px;
        color: rgb(240,20,20);
      }
      .old{
        text-decoration: line-through;
        font-size: 10px;
        color: rgb(147,153,159);
      }
    }
    .cartcontrol-wrapper{
      position: absolute;
      right: 12px;
      bottom: 12px;
    }
    .buy{
      position: absolute;
      right: 18px;
      bottom: 18px;
      z-index: 10;
      height: 24px;
      line-height: 24px;
      padding: 0 12px;
      box-sizing: border-box;
      font-size: 10px;
      border-radius: 12px;
      color: #fff;
      background: rgb(0,160,220);
      transition: all 0.2s;
      opacity: 1;
      &.hide-enter,&.hide-leave-active{
        opacity: 0;
      }
    }
  }
  .info{
    padding: 18px;
    .title{
      line-height: 14px;
      margin-bottom: 16px;
      font-size: 14px;
      color: rgb(7,17,27);
    }
    .text{
      line-height: 24px;
      padding: 0 8px;
      font-size: 12px;
      color: rgb(77,85,93);
    }
  }
  .rating{
    padding-top: 18px;
    .title{
      line-height: 14px;
      margin-left: 18px;
      font-size: 14px;
      color: rgb(7,17,27);
    }
  }
}
</style>
